of/address: Fix NULL bus dereference in of_pci_range_parser_one()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74491
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 13:17:54 UTC
Updated2026-08-15 13:17:54 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: of/address: Fix NULL bus dereference in of_pci_range_parser_one() The bus matching rework made of_match_bus() return NULL for nodes with ranges/dma-ranges but no local #address-cells. parser_init() stored that NULL bus, and the range iterator later dereferenced it. Reject such nodes in parser_init(), leaving an explicit empty iterator for callers that ignore the init return, and make of_dma_get_max_cpu_address() honour the init failure so a rejected node cannot clamp the DMA limit.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 64ee3cf096ac590e7da2ceac1c390546bff5e240 88752b811f72aa7a16de6dad4b25031d7308673e git Not specified
CNA Linux Linux affected 64ee3cf096ac590e7da2ceac1c390546bff5e240 eddd0159a8761a16a9d183676b03cf493417816e git Not specified
CNA Linux Linux affected 64ee3cf096ac590e7da2ceac1c390546bff5e240 bba13ad17b1a11b3f1ed9b3a5d556191d7755a59 git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc6 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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